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MHT CET 2021 22th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which element from following lanthanoids has half-filled $$\mathrm{f}$$- orbital in observed and expected electronic configuration?

A
Eu
B
Sm
C
Ce
D
Pm
2
MHT CET 2021 21th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which element among the following is ferromagnetic?

A
Ni
B
Cu
C
Sc
D
Zn
3
MHT CET 2021 21th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which property from following is NOT exhibited by interstitial compounds?

A
Their melting points are higher than pure metal.
B
Their densities are less than parent metal.
C
Their chemical properties are different than parent metal.
D
These are hard and good conductors of heat and electricity.
4
MHT CET 2021 20th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

What are the formulae of the compounds formed when lanthanoids (Ln) react with nitrogen and halogen respectively?

A
$$\mathrm{LnN}$$ and $$\mathrm{LnX}_3$$
B
$$\mathrm{LnN}_3$$ and $$\mathrm{LnX}$$
C
$$(\mathrm{Ln})_2 \mathrm{N}_3$$ and $$\mathrm{LnX}_2$$
D
$$\mathrm{LnN}$$ and $$\mathrm{LnX}$$
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